Trolley-wheel



R. G. LARSON AND W. F. HORTON.

TROLLEY WHEEL. APPCATION FILED MAY26. 1920.

Patented Feb. 8. 1921. .94 /0 UNITED STATES PATENT` orFicE.

RAYMOND G. LARSON, OF OWATONNA, MINNESOTA, AND iii/'ALTER F. HORTON, OF

FORT WORTH, TEXAS.

TROLLEY-WHEEL.

Specication of Letters Patent.

Patented Feb. 8, 1921.

Application ufiled May 26, 1920. Serial No. 384,407.

To all 'whom it may concer-a:

Be it known that We, Baritone G. Larson andlVAI/rnn FHonroN, citizens ot the United States, residing at (lvratonna and F ort llvlorth, counties ot .Steele and T arrant, and States of Minnesota and Texas, respectively. have invented certain new and useful linprovements in Trolley-lllheels; and we do hereby declare the following to be a tull, clear, and exact description ot' the invention, such as will enable others sl-:illed in the art to Which it appertains to make and use the same.

Our invention has tor its object to provide an improved trolleyT Wheel of the type having an intermediate trolley Wire groove and spiral replacing grooves so arranged on opposite sides of the intermediate groove as to automaticallyv ret-urn the trolley wire to the intermediate groove in case the same should be accidentally displaced.

To the above end, the invention consists of the novel devices and combinations of' devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout` the several views.

Referring to the drawings:

Figure 1 is a view partly in elevation and partly in section; and

Fig. 2 is a view in side elevation.

The numeral 3 indicates a trolley arm having attached to its outer end a fork or harp al, on the prongs of which are formed a pair of axially alined hubs 5. A shait 6, in the form of a nut-equipped bolt, has its ends mounted in the hubs 5 and the nut thereof is locked in position by a cotter pin 7 inserted through a bore in the shaft and any one pair of alined notches in said nut. Integrally formed with each hub 5 is an upwardly projecting guard finger 8.

The trolley Wheel proper includes an intermediate ring Wheel 9 and two axially alined cones 11 located on opposite sides or said ring Wheel and having their bases turned toward each other. Formed in the periphery of the ring wheel 9 is an annular groove 10 adapted to receive a trolley Wire, on which said ring Wheel runs. Secured in the outer or small end portions of the cones 11 are bushings 12 journaled on the sha-tt 6. B y reference to Fig. "l, it will be noted that the sha't't (3, between the bushings 12, is materially reduced in diameter.

Formed in the periplieries ot the cones il are right and lett-hand spiral grooves 18, which progressively decrease in circumference away troni the ring Wheel 9Y Said ring Wheel 9 is axially alined with the cones il and supported therefrom by 'forming on the bases of said cones, hub-like extensions 111'-, which fit in correspondingly 'formed recess-es 15 'formed in the sides of the ring Wheel. To rigidly but detachably connect the ring Wheel 9 and cones l1, there is inserted through alined bores therein a plurality ot circumferentially spaced screws 16. the heads of which bear against the outer tace ot one oi: said cones and the ends of which have screwthreaded engagement with the other et said cones. It will thus be seen that the ring Wheel 9 is frictionallyclamped between the cones.

The interiors of the cones l1 are tapered from points near the bushings .l2 substantially to the' interior surfaces ot the ring Wheel 9, thus materially reducing the Weight of the cones. Y

From the above description, it is evident that the spiral grooves 13 are so arranged as to return a trolley Wire to the groove l() in case the same becomes displaced trom the ring` Wheel 9. It is alsokevident that the guard lingers 8 Will keep the trolley wire, when displaced from the groove 10, within the prongs of the fork e. By forming the intermediate portion of the trolley as a'ring wheel and supporting the same from the cones, the same may be made relatively light and when Worn out7 may be replaced with a new one. Substantially, the only Wear that comes on the cones il on the bushings l2 and these may be replaced when worn.

What We claim is: y

l. The combination With a fork, ot a shat't carried thereby and extending therethrough, a pair of axially alined truncated cones journaled on the shaft with their bases turned toward each other, said cones being provided with peripheral right and lett hand spiral ribs forming grooves therebetween, said ribs progressively decreasing in circumference away from the bases and a ring Wheel having parallel ianges forming an intermediate groove interposed between the cones and carried thereby, the flanges on said Wheel being distinct Yfrom the flanges on the cones.

2. The combination with a fork, oli a shaii't carried thereby and extending theretlnough, a pair oi axially alined truncated cones jonrnaled on `the shai't with their bases dispesed toward each other, said cones being` provided, respectively.; with peripheral right and left hand helical ribs forming grooves therebetween, said grooves being appreeiablv Wider than the flanges, said flanges preferably decreasing in circumference away from said bases, a ring Wheel interposed between the cones, said Wheel having parallel Hangers tapered to form a V-shaped groove therebetween and having parts that interlock with the cones to be supported by the Vsaine and means detachably connectingthe cones and Wheel. e

3. The combination with a forli, of a shaft carried thereby and vextending therethrough,

sively decreasing in circumference avrai" from said bases, said cones being' jonrnaled on said shaft, a Wheel interposed between the cones having parallel Wedge-shaped flanges forming' a groove therebetween, said wheel being carried by the cones and having an in terloclringshoulder 'engaged thereby, and

means rigidly but detaehabljyvr connecting!` the cones and Wheel inside of said shoulder.

In testimony whereoir We ailix our signatures.

RAYMOND Gr. LAR-SON. Y' WALTER-F. HORTON. 

